There's just something about a new haircut that makes you feel reborn again. You get the feeling that at least temporarily, you problems have spontaneously ceased to exist and that you are capable of accomplishing anything. Negative thoughts are replaced with a surplus of confidence and the drive to do something new and adventurous.
But why does a new haircut (the assumption being that you enjoy the way it looks) so easily channel positive vibes? Seeing the sun when you awake, the sign of another new day to learn and grow: shouldn't this be sufficient enough for us to grow in confidence and positive energy? Another day to live, regardless of your beliefs, is never promised and should always be "carpe-ed" (aka seized).
The next time you get a new haircut and you start experiencing sudden positive energy, remember this--every day you get up to breathe again should be more than enough to give you motivation to be the best you, and simply, to enjoy life.